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Example of sedimentation test to compare soluble salts water extracts from suspended clay. This simple test also reveals ultimate particle size distribution differences in clays that a sieve analysis cannot do.
| Tests | Ultimate Particle Size Distribution | 
| Tests | Soluble Salts Evaluate and compare the solubles salts content in clay bodies and materials | 
| Glossary | Ultimate Particles Utlimate particles of ceramic materials are finer than can be measured even on a 325 mesh screen. These particles are the key players in the physical presence of the material. | 
| Glossary | Efflorescence A common problem with dry and fired ceramic. It is evident by the presence of a light or dark colored scum on the dry or fired surface. | 
| Glossary | Soluble Salts In ceramics, certain compounds in clays and glazes can dissolve into the water, then on drying these are left on the surface. | 
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